검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | F16K-031/02 |
미국특허분류(USC) | 251/129.04 ; 251/129.03 ; 251/288 ; 239/067 |
출원번호 | US-0728758 (1996-10-11) |
발명자 / 주소 | |
대리인 / 주소 |
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인용정보 | 피인용 횟수 : 61 인용 특허 : 0 |
A compact, portable, radio-controlled on/off valve for use with a garden hose has low energy consumption by using a water-powered motor for driving the valve into open and closed positions. The on/off valve has a pilot device for starting water flow through the water-powered motor. A low-power local electrical energy source, such as a battery pack, powers the pilot device and a receiver for receiving control signals. Upon receiving a control signal, the pilot device is energized briefly to start water flow through the water-powered motor. The water-power...
[ What is claimed is:] [1.] A remote-control on/off valve powered by a low-power local electrical energy source comprising: a valve member having open and closed positions disposed in a main conduit;a water-powered motor in a parallel flow path which is in parallel with the main conduit, the water-powered motor being coupled to the valve member for driving the valve member between an open position and a closed position;a receiver powered by the local electrical power source for receiving wirelessly transmitted control signals; anda pilot device powered b...